20988042

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{81349}}^1$

素因数の和:81397

約数の個数: 16

約数和(自身を含む): 42952800

約数和(自身を除く): 21964758

約数列:

[1, 2, 3, 6, 43, 86, 129, 258, 81349, 162698, 244047, 488094, 3498007, 6996014, 10494021, 20988042]

約数ペア:

[(1, 20988042), (2, 10494021), (3, 6996014), (6, 3498007), (43, 488094), (86, 244047), (129, 162698), (258, 81349)]